(19)
(11) EP 2 600 353 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.04.2016 Bulletin 2016/17

(43) Date of publication A2:
05.06.2013 Bulletin 2013/23

(21) Application number: 12194918.4

(22) Date of filing: 29.11.2012
(51) International Patent Classification (IPC): 
G21F 9/00(2006.01)
G21F 9/30(2006.01)
B09C 1/08(2006.01)
 G21F 9/28(2006.01)
B09C 1/00(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 30.11.2011 JP 2011261983
29.03.2012 JP 2012075497

(71) Applicants:
  • Ebara Industrial Cleaning Co. Ltd.
    Kanagawa 210-0823 (JP)
  • Swing Corporation
    Tokyo 108-8470 (JP)

(72) Inventors:
  • Sekine, Tomokazu
    Kawasaki-shi, Kanagawa 210-0823 (JP)
  • Shimomura, Tatsuo
    Kawasaki-shi, Kanagawa 210-0823 (JP)
  • Miama, Takahiro
    Kawasaki-shi, Kanagawa 210-0823 (JP)
  • Sakashita, Daichi
    Tokyo, Tokyo 108-8470 (JP)
  • Futami, Kenichi
    Tokyo, Tokyo 108-8470 (JP)

(74) Representative: Stoner, Gerard Patrick 
Mewburn Ellis LLP
City Tower 40 Basinghall Street London EC2V 5DE
City Tower 40 Basinghall Street London EC2V 5DE (GB)

   


(54) Decontamination method and apparatus for solid-state material contaminated by radiocesium


(57) A decontamination method for solid material contaminated by radiocesium, comprising bringing the solid-state material containing radiocesium into contact with a first processing solution and preferably eluting cesium ion from the solid-state material to the liquid phase in the presence of potassium ion or ammonium ion.







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Search report